ISC Class 12 Physics Chapter Wise Questions with Solutions. We covered all the ISC Class 12 Physics Chapter Wise Questions with Solutions in this post for free so that you can practice well for the exam.
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ISC Class 12 Physics Mock Test for Students
Which of the following phenomena is not explained by Huygens’s construction of wavefront?
(A) Refraction
(B) Reflection
(C) Diffraction
(D) Origin of spectra
Option d – Origin of spectra
The lines drawn normally to the wavefront represent a path of light known as
(A) plane waves
(B) rays
(C) spherical waves
(D) all of these
Option b – rays
The angle of reflection is the angle between :
(A) reflected wavefront and normal to reflecting surface
(B) reflecting surface and normal to reflecting surface
(C) reflected ray and reflecting surface
(D) reflected wavefront and reflecting surface
Option d – reflected wavefront and reflecting surface
When light is reflected from the mirror :
(A) its wavelength changes
(B) its speed changes
(C) its phase changes
(D) its frequency changes
Option c – its phase changes
If the angle of incidence and angle of refraction is the same, then the ratio of the size of the incident and refracted wavefront is :
(A) 2 : 1
(B) 1 : 2
(C) 1 : 1
(D) 1 : 3
Option c – 1 : 1
As the plane wavefront propagates, its radius of curvature :
(A) decreases
(B) increases
(C) first increases and then decreases
(D) remains infinite
Option d – remains infinite
A wave can transmit ……. from one place to another :
(A) energy
(B) amplitude
(C) wavelength
(D) matter
Option a – energy
Huygen’s concept of secondary waves (source) is :
(A) used to determine the wavelength of light
(B) used to determine the speed of light
(C) a geometrical method to find the position of a new wavefront
(D) all of these
Option c – a geometrical method to find the position of a new wavefront
Huygens principle postulates :
(A) the wave is a transverse one
(B) each point on the wavefront is in a different phase
(C) the tangent to the wavefront is the direction of propagation of the wave
(D) each point on the wavefront is the center of a new disturbance
Option d – each point on the wavefront is the center of a new disturbance
Light from the sun will be reaching on Earth’s surface in the form of :
(A) plane wavefront
(B) spherical wavefront
(C) cylindrical wavefront
(D) elliptical wavefront
Option a – plane wavefront
Cylindrical wavefront is obtained from a :
(A) the vertical linear source
(B) the horizontal linear source
(C) inclined linear source
(D) all of the above
Option d – all of the above
A narrow slit is placed in front of a source of light, and the wavefront originating from the narrow slit is :
(A) plane wavefront
(B) cylindrical wavefront
(C) spherical wavefront
(D) all of these
Option b – cylindrical wavefront
A perpendicular drawn at any point on the wavefront in the direction of propagation of light is :
(A) wave normal
(B) wavelength
(C) arc of circle
(D) wavefront
Option a – wave normal
Wavefront and a ray of light are :
(A) perpendicular to each other
(B) parallel to each other
(C) converges from each other
(D) diverge from each other
Option a – perpendicular to each other
The wave normals drawn on spherical and plane wavefronts respectively are :
(A) diverges and parallel
(B) parallel and diverges
(C) converges and diverges
(D) converges and parallel
Option a – diverges and parallel
The wavefront originating from the point source of light at a finite distance gives rise to
(A) plane wavefront
(B) cylindrical wavefront
(C) spherical wavefront
(D) elliptical wavefront
Option c – spherical wavefront
A small part of a spherical wavefront from a point source of light at an infinite distance gives rise to
(A) plane wavefront
(B) spherical wavefront
(C) cylindrical wavefront
(D) elliptical wavefront
Option a – plane wavefront
A point source of light is at the focus of the convex lens. The outcoming light through the lens will be in the form of :
(A) plane wavefront
(B) spherical wavefront
(C) cylindrical wavefront
(D) elliptical wavefront
Option a – plane wavefront
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